Question: A patient’s thyroid will be imaged with 123I which
undergoes β + decay.
(a) What is its daughter …
A patient’s thyroid will be imaged with 123I which
undergoes β + decay.
(a) What is its daughter and its
daughter’s halflife?
(b) The patient is given a dose of 100 µCi. How many 123I
radionuclides does the patient ingest?
(c) The patient’s thyroid is scanned 6 hours after ingestion. What
is the activity of radionuclides remaining at the time of each
scan?
(d) How long must the patient wait before the activity falls to
less than 10% of its original value?
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